- All sections
- C - Chemistry; metallurgy
- C02F - Treatment of water, waste water, sewage, or sludge
- C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
Patent holdings for IPC class C02F 1/44
Total number of patents in this class: 6574
10-year publication summary
|
543
|
586
|
668
|
644
|
622
|
638
|
609
|
524
|
473
|
149
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kurita Water Industries Ltd. | 1110 |
214 |
| Toray Industries, Inc. | 6652 |
183 |
| Organo Corporation | 394 |
111 |
| Evoqua Water Technologies LLC | 904 |
63 |
| Kubota Corporation | 3054 |
58 |
| Veolia Water Solutions & Technologies Support | 547 |
58 |
| General Electric Company | 18133 |
54 |
| LG Chem, Ltd. | 17205 |
54 |
| Hitachi, Ltd. | 16452 |
53 |
| BL Technologies, Inc. | 831 |
53 |
| Saudi Arabian Oil Company | 11322 |
48 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
46 |
| Sumitomo Electric Industries, Ltd. | 14131 |
45 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
43 |
| Nitto Denko Corporation | 7879 |
41 |
| Ecolab USA Inc. | 5190 |
41 |
| Toyobo Co., Ltd. | 2286 |
34 |
| Midea Group Co., Ltd. | 4025 |
33 |
| Nanyang Technological University | 1739 |
33 |
| Massachusetts Institute of Technology | 9795 |
32 |
| Other owners | 5277 |